Robotic Grasping of Vine Tomatoes: A Learning Approach

Sustainability assessment of hydroponic tomato farming systems for Souss-Massa region

One strategy to solve the severe environmental problems of Moroccan horticulture, especially water scarcity, is to upgrade agricultural methods by introducing high-tech greenhouses equipped with closed-loop hydroponic systems. However, these technologies are unprecedented in the country, and the implications for the environment remain unknown...

Conceptual design of an automation-facilitating tomato greenhouse concept

Automation in tomato greenhouses is lacking compared with some other crops. The efficiency and consistency of greenhouse operations can be boosted by implementing automation. Therefore, a new concept that facilitates the robotisation of crop-handling tasks is investigated. This concept combines the existing technology of a movable-gutter system...

Linear State-Space System Identification for Automatic Greenhouse Climate Control

Over nine billion people will have to be fed fresh and healthy food in 2050 according to United Nations. This puts pressure on the horticulture sector, responsible for a large portion of the world’s food production. The literature has shown that automatic optimal control algorithms are able to make better use of resources and can even outperform...

An analysis of four different models for quantifying tomato transpiration in a soilless greenhouse

Scientific literature points to several models used to calculate the transpiration of vegetable crops inside a greenhouse but the results are hard to compare since different experiment setups were used. This study aimed to analyse the accuracy of four different transpiration models, Penman-Monteith, Stanghellini, Priestley-Taylor, and Takakura...

A Geometry-Based Grasping Method for Vine Tomato

In this thesis, a geometry-based grasping method for vine-tomato is proposed. The method utilizes a geometric model of the robotic hand and truss to determine an optimal grasping location on the truss stem. This allows grasping a truss without requiring delicate contact sensors or complex mechanical models. A computer vision pipeline is...

Water stress detection using radar

Vegetation is a crucial part of the water and carbon cycle. Through photosynthesis carbon is assimilated for biomass production, and oxygen is released into the atmosphere. During this process, water is transpired through the stomata, and is redistributed in the plant. Transpired water is refilled by uptake of water from the root zone in the...

A comparison between leaf dielectric properties of stressed and unstressed tomato plants

Leaf dielectric properties influence microwave scattering from a vegetation canopy. The dielectric properties of leaves are primarily a function of leaf water content. Understanding the effect of water stress on leaf dielectric properties will give insight in how plant dynamics change as a result of water stress, and how radar can be used for...